20.500.12556/DKUM-52682 The influence of cooling rate on the microstructure of an Al-Mn-Be alloy Vpliv ohlajevalne hitrosti na mikrostrukturo zlitine Al-Mn-Be In ternary Al-Mn-Be alloys a metastable quasicrystalline phase can form at relatively low cooling rates (≈ 100 K/s); however, besides the quasicrystalline phase other phases can also be present. We found that the investigated alloy is very prone to the formation of metastable phases, which are also quasicrystalline. Using different investigation methods we determined the type of phases, their shape, morphology, chemical composition and distribution. Special attention was given to the micro- and nano-sized quasicrystalline particles. When using slow cooling, Al10Mn3 and Be4AlMn were present; however, with a faster cooling rate a quasicrystal approximant and a quasicrystalline phase were formed. V ternarnem zlitinskem sistemu Al-Mn-Be lahko nastane metastabilna kvazikristalna faza pri relativno majhni ohlajevalni hitrosti (≈ 100 K/s), vendar lahko poleg nje nastanejo še druge kristalne faze (predvsem intermetalne faze). Z uporabo različnih raziskovalnih metod smo ugotovili vrsto nastalih faz, kemijsko sestavo in porazdelitev. Ugotovili smo, da je zlitina nagnjena k nastanku metastabilnih faz (tudi kvazikristalnih). Predvsem so zanimivi kvazikristalni delci, ki se pojavljajo v mikro- in nanometrskih velikostih. S počasnim ohlajanjem so nastale faze Al10Mn3 in Be4AlMn, pri hitrem ohlajanju pa so se namesto njih pojavili kvazikristalni aproksimanti in kvazikristalne faze. aluminium quasicrystals cooling rate microstructure aluminij kvazikristali ohlajevalna hitrost mikrostruktura true false true Angleški jezik Slovenski jezik Znanstveno delo 2015-07-10 18:09:43 2015-07-10 18:09:43 2022-06-01 03:07:08 2021-05-10 03:25:35 2008 0 0 str. 65-68 št. 2 Letn. 42 2008 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1580-2949 620.715:620.18 106193664 675242 1580-2949 URN:SI:UM:DK:YFJNSKMG Materiali_in_tehnologije_2008_Rozman_et_al._The_influence_of_cooling_rate_on_the_microstructure_of_an_Al-Mn-Be_alloy.pdf Materiali_in_tehnologije_2008_Rozman_et_al._The_influence_of_cooling_rate_on_the_microstructure_of_an_Al-Mn-Be_alloy.pdf 1 74D96B0D80FB18EF1DBB98B8779D467C 8db288e088925e56b7a8e1cd501fa3154509d6a4d9096945db5a440cf3e2ae97 04325149-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=110127 http://mit.imt.si/Revija/izvodi/mit082/rozman.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=110126 Fakulteta za strojništvo 0 0 0